JPH08238343A - Golf club head with weight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head with weights for a putting with an accurate degree and a big leap control by providing a weight which is adjacent to the club face, longly extends between a toe and a heel, and is slender enough to be received into a body opening, and plural weights which longely extend between the back of the body and the club face. SOLUTION: In the body 15, a cylindrical opening extending toward the axis from the toe 22 to the heel is provided and the weight 30 is inserted into an opening 29. The weight 30 has tubular shape, and the outer wall of the tubular weight 30 perfectly fits in the inner wall of the opening 29. The tubular weight 30 is filled with viscous liquid like oil or so. Besides, inside of the body 15, parallel cylindrical openings 38 and 39 are provided which extend from the back wall 20 of the club head 10 to the face 16, and each cylindrical weight 40, 41 is inserted into the opening 38, 39. Due to the tubular weight 30 and stuffed weights 40 and 41, the club head 10 offers a soft touch when it touches a golf ball.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates generally to golf clubs, and more particularly to golf clubs having a weighted head.

In order to improve the golfer's putt technique, putter golf heads reduce the incidence of turning and vibration that occur when the club head impacts the golf ball, reducing the torque and rotational moment of the golf club. Must have face balance. To further improve the golfer's putt technique, the putter's club head must have a soft touch to accurately hit the golf ball.

[0003]

BACKGROUND OF THE INVENTION Palmer on January 4, 1916
U.S. Pat. No. 1,167,106 (invention entitled "Golf Club") issued to U.S. Pat. An opening surrounded by a threaded wall is formed in the thickened portion of the club head into which threaded plugs of various weights are inserted to accommodate the golf club's personal needs. The weight of is adjusted.

December 9, 1947, Sears
U.S. Pat. No. 2,432,450 (invention title "Golf Club") issued to U.S. Pat. A liquid load medium is injected into the club head chamber. The liquid load is mercury.

Estes, June 23, 1970
U.S. Pat. No. 3,516,673 (invention entitled "Club with Transfer Load"), issued to U.S. Pat. The hollow head is partially filled with mercury.

US Pat. No. 5,082,279 issued to Jan. 21, 1992 to Hull et al. (Title of Invention "Liquid Filled Golf Club") discloses a golf club head having a cavity. Is disclosed. The cavity of the club head is waterproof and partially filled with liquid or other fluid.

Simmons (May 31, 1994)
U.S. Pat. No. 5,316,300 ("Golf club with selective liquid in hollow shaft"), issued to s) discloses a hollow shaft. A chamber containing a fluid is provided in a selected portion of the shaft. The fluid has a high viscosity.

Riley on February 13, 1979
U.S. Pat. No. 4,139,196 (invention entitled "Large Distance Golf Club") has a sighting aid in the shape of parallel symbols on the top surface of the club head. A golf club is disclosed. The parallel symbols are located in the direction of the desired flight line of the ball and facilitate the alignment of the club head with the ball.

[0009]

OBJECTS OF THE INVENTION It is an object of the present invention to provide a golf club having a golf head which allows the golfer to putt with improved accuracy and greater distance control.

Another object of the present invention is to provide a golf club which provides an improved soft touch when the golf head contacts a golf ball.

Yet another object of the present invention is to reduce the rate of rotation and vibration that occur when the golf head hits the golf ball, and to reduce the torque and rotational moment of the club head so that the golf club head balances the face balance. To provide a golf club having.

[0012]

1 to 8 show a golf club head 10 according to an embodiment of the present invention. This club head is suitable for use as a putter club head. Although a putter club head is shown here, the present invention is also applicable to golf clubs other than putters. In a preferred embodiment, the golf club 10 has a T
-6 Contains a body 15 made of heat treated aluminum. The club head 10 in this embodiment typically weighs about 236 grams. The hosel 11 is integrally molded with the body 15 of the club head 10. In the preferred embodiment, the hosel 11 and the kraft body 15 are cast as one piece. The inner diameter of the upper end 11b of the hosel 11 is 0.925 cm (0.375 in).

The body 15 has a club face 16 suitably provided with a plurality of recesses 17 to improve the ball striking surface of the club head 10. In the exemplary embodiment, face 16 of club head 10 is a body 1
It is curved inward from the sole 18 of No. 5 toward the top wall 19 at a loft angle of 3 °. The top wall 19 of the body 15 is
In the part of the width extending to the vertical rear wall 20, in the direction from the heel to the toe, the curve is first upward and then in the direction from the heel to the toe. The sole 18 of the body 15 also has a heel 21 and a toe 22
And is slightly arcuate. The vertical dimension of the club face 17 is 0.87 inches in the exemplary embodiment, with the top wall 19 of the club face 17 being 2.54 cm at the largest.
It has a vertical dimension of (1 in). In the exemplary embodiment, toe 2 on face 16 of club head 10
The distance between 2 and the heel 21 is 5.42 cm (2.135 cm).
in).

The body 15 includes a toe 22 and a heel 21.
A cylindrical opening 29 extending in the axial direction is provided. The opening 29 is, in an exemplary embodiment,
It has a diameter of about 1.07 cm (27/64 in) or slightly less. The weight 30 is inserted into the opening 29. The weight 30 has a tubular shape (FIGS. 5, 6, and 9). The outer wall of the tubular weight 30 fits snugly against the inner wall of the opening 29. In the exemplary embodiment, the tubular weight 30 comprises a metal, such as tungsten, lead, or brass. In the preferred embodiment, the tubular weight 30 comprises lead. In an exemplary embodiment, the tubular weight 30
Is filled with a suitable viscous liquid 34, such as oil. In the exemplary embodiment, tubular weight 30 is 0.56 cm from face 16 of club head 10.
(0.22 inches) apart. In an exemplary embodiment, the viscous liquid 34 is SAE 90 weight oil.

In an exemplary embodiment, the tubular weight 3
0 has an outer diameter of about 1.07 cm (27/64 in). An external thread 31 is provided at each end of the tubular weight 30. A leakproof cap 32 is provided at each end of the tubular weight 30, and an internal screw 33 is cut on the cap. In an exemplary embodiment, the leakproof cap 32
Is made of a suitable material such as plastic, rubber, neoprene, etc. In a preferred embodiment, the tubular weight 3
A suitable O-ring or washer is provided at each end of 0 to accommodate the large diameter of the leakproof cap 32 to be connected. The cap 32 is screwed with the threaded end 31 of the tubular weight 30 to contain the liquid in the tubular weight 30. In the preferred embodiment, the cap 32 is adhered to the end of the tubular weight 30 by a suitable epoxy resin.

Within the body 15 are provided parallel cylindrical openings 38, 39 (FIGS. 5 and 9) extending from the rear wall 20 of the club head 10 toward the face 16. Cylindrical weights 40 and 41 are inserted into the openings 38 and 39, respectively. These weights are made of any suitable material such as lead, brass, tungsten and the like. These weights are solid and are provided parallel to each other, and the axes thereof are provided at right angles to the axis of the tubular weight 30. These solid weights 40, 41 fit snugly against the inner walls of the cylindrical openings 38, 39 and are wedged in. In the preferred embodiment, the weights 40, 41 are securely adhered to the inner walls of the cylindrical openings 38, 39 with a suitable epoxy resin. The weight of these solid weights 40, 41 may vary according to the needs of the user of the club head 10.

The tubular weight 30 and the solid weights 40 and 41
Thus, the club head 10 provides face balance that verifies the rate of occurrence of rotation and vibration. As a result, club head 10 allows for a soft touch when the golf club contacts the golf ball. Tubular weight 30 and solid weights 40, 41 improve the torque resistance created when club head 10 hits a golf ball. The tubular weight 30 provides a large sweet spot on the face 16 of the club head 10.

The hosel 11 is made of a suitable material such as stainless steel and is located on the heel 21 of the club head 10. The lower end 11a of the hosel 11 is solid,
The top wall 19 is inclined toward the toe 22 of the club head 10 and extends upward. The upper end 11 of the hosel 11
The b is integrally formed with the lower end 11 a of the hosel 11 and extends upward with a tilt toward the heel 21 of the club head 10 with respect to the lower end 11 a of the hosel 11.
The upper end 11b of the hosel 11 is tubular and accommodates the lower end of the club shaft in the manner described below. In the exemplary embodiment, the upper end 11 b of the hosel 11 is inclined by 4.5 ° from a plane perpendicular to the top wall 19.

The body 15 of the club head 10 has a top surface 19
A recess is formed at 50 (FIGS. 1 and 2). Rectangular recesses 51a-51d are continuously and parallelly provided in the recess 50 of the body 15 and extend from the rear wall 20 of the club head 10 toward the face 16. In the top wall 19 of the club head 10, a rectangular groove 52 is provided with a rectangular groove 5.
It is provided parallel to 3a-53e and extends from the club face 16 toward the rear wall 20. Groove 52 is groove 5
It is consistent with 3c. The grooves 53a-53c each have a width of 0.
Width of 635 cm (0.25 in), 2.34 cm (0.
It has a length of 92 in) and a depth of 1.27 cm (0.5 in). The groove 52 and the grooves 53a to 53e serve as a visual aid for matching the moving direction of the golf ball as an aid for hitting the golf ball.

FIGS. 10 and 11 show a golf club 55 which is an embodiment of the present invention. Golf ball 55
Has a tubular or hollow shaft 56, a hosel 11 and a club head 10. Club shaft 56 is 1994
No. 5,316,300 issued to Simmons on May 31, 1959 (invention entitled "Golf Club with Selective Liquid in a Hollow Toft"). The lower end of the shaft 56 is fixed to the upper end 11b of the hosel 11 by a known method.

The tubular shaft 56 has a chamber 57. Suitable plugs 60, 61 define the upper and lower limits of chamber 57. Room 5
7 is filled with a suitable fluid 63. In a preferred embodiment, the fluid 63 is highly viscous, i.e. 240,00 under conditions of 24.4 ° C (76 ° F) at 5 rpm.
It has a viscosity of 0-350,000 centipoise. The fluid 63 does not flow easily and therefore imparts solidity to the shaft 55. A suitable fluid is M8969 sold by Macklanbury-Duncan Co. of Oklahoma City, Oklahoma.
There is a type of latex calk. The shaft 56 is made of, for example, titanium, steel, graphite,
It is made of a metal or plastic material such as boron, aluminum, or Kevlar. The length of the chamber 57 is the shaft 5
6% to 10% -80% of the total length. In the preferred embodiment, the chamber 57 is 20% -30% of the total length of the shaft.

The length of the chamber 57 is selected based on various considerations such as the bending properties of the material and the characteristics of the fluid used. Which side of the length of the shaft 56 the chamber 57 is located affects the natural vibration frequency of the shaft 56. The closer the chamber 57 is to the club head 10, the lower the natural vibration frequency is given. On the contrary, the larger the distance between the chamber 57 and the club head 10, the higher the natural vibration frequency. Therefore, by choosing the position of the chamber 57 with respect to the club head 10, the natural frequency of vibration can be adjusted as desired. By providing the chamber 57 containing the highly viscous fluid at the selected predetermined position, the deformation of the shaft 56 is minimized, and the shaft 5 is prevented.
6 natural vibration frequencies can be controlled.

The shaft 56 and the club head 10 work together to improve the face balance of the golf club 55, which allows the golfer to orient the golf ball more accurately and over the distance the golf ball travels. Will be able to have better control.

12 and 13 show another embodiment of the club head of the present invention. As shown in these figures, the club head 60 has another form of weight 61 extending between the toe and heel. Club head 6
Of the 0 parts, those similar to the club head 10 part are indicated by the same instruction numbers with a dash.

The club head 60 is similar to the club head 10 except that a weight 61 is used instead of the tubular weight 30. The weight 61 is tungsten,
Composed of a suitable metal, such as lead or brass. A solid cylindrical member 62 is loaded into a cylindrical opening 29 'formed in the body 15' of the club head 60 and extends from the toe 22 'of the body 15' toward the heel 21 '. In the exemplary embodiment, the cylindrical opening 29 'contains a suitable viscous material 63, such as oil. Since the cylindrical member 62 has a diameter slightly smaller than the inner diameter of the cylindrical opening 29 ′, when the cylindrical member 62 is loaded into the cylindrical opening 29 ′, the cylindrical member 62 is surrounded by the viscous material 63. To be done. In an exemplary embodiment, viscous material 6
3 is SAE90 weight oil.

At the ends of the cylindrical member 62, soft rubber caps 65 and 66 made of a suitable material such as silicone rubber are provided, respectively. Cap 6
5, 66 are respectively bonded to the ends of the cylindrical member 62 by a suitable epoxy resin and have a diameter approximately equal to the diameter of the opening 29 '. Solid cylindrical member 6
2. The viscous material 63 that surrounds it and the soft rubber caps 65 and 66 extend the impact time between the club head 60 and the golf ball, ie, the club head dwell time. The rubber caps 65 and 66 are bonded to the ends of the cylindrical member 62 with a suitable epoxy resin. The cap 66 acts as a seal to hold the viscous material within the opening 29 '. A threaded plug 67 is provided for threadingly coupling with a threaded wall in opening 29 'to retain weight 60 in opening 29' and viscous material 63 in opening 29 '. It is held together with the cap 66.

Club head 60 is used with golf club 55 in a manner similar to that described for club head 10.

In the present invention, the viscous material 63 can be omitted. At that time, the soft rubber cap 6
Reference numerals 5 and 66 have the function of extending the impact moment between the club head 60 and the golf ball or extending the residence time of the impact moment.

[Brief description of drawings]

FIG. 1 is a perspective view of a golf club head according to an embodiment of the present invention viewed from the face and toe of the club head.

2 is a perspective view showing the top wall of the club head and the back side of the golf club head of FIG. 1 as viewed from the toe.

FIG. 3 is a rear view of the club head shown in FIGS. 1 and 2.

FIG. 4 is a plan view of the club head shown in FIGS. 1 to 3.

FIG. 5 is an exploded view of the club head shown in FIGS.
FIG. 3 illustrates a weight extending from the toe of the club head toward the heel and a weight extending from the rear wall of the club head toward the face.

6 is a vertical cross-sectional view taken along line 6-6 of FIG. 1, showing the weight extending from the toe of the club head toward the heel.

FIG. 7 is a vertical cross-sectional view taken along line 7-7 of FIG. 4 showing the weight at the toe end extending from the back wall of the golf club head toward the face.

FIG. 8 is a vertical cross-sectional view taken along line 8-8 of FIG. 4, showing the weight at the heel end extending from the rear wall of the club head toward the face.

9 is a horizontal cross-sectional view taken along the line 9-9 of FIG. 3 with a weight extending from the toe of the club head toward the heel and a heel of the club head extending from the rear wall of the club head toward the face. The weight is shown parallel to the end and toe end.

FIG. 10 is a front view of a golf club according to an embodiment of the present invention.

11 is a vertical cross-sectional view taken along the line 11-11 of FIG. 10, showing a hollow shaft having a chamber for containing a highly viscous fluid provided in a portion of the hollow shaft.

FIG. 12 is a vertical cross-sectional view of another embodiment of the club head of the present invention taken along line 6-6 of FIG. 1, showing the weight of the alternative embodiment of the club head located from the toe to the heel. .

13 is a horizontal cross-sectional view of the club head shown in FIG. 12, showing the weight of the club head of FIG. 12 located from the toe to the heel along line 9-9 in FIG.

[Explanation of symbols]

 10, 60 Club head 11 Hosel 15 Body 16 Club face 19 Top wall 20 Rear wall 21 Heel 22 Toe 29 Opening 30 Tubular weight 34 Viscous liquid 40, 41 Solid weight 56 Shaft 57 Chamber

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[Procedure amendment]

[Submission date] December 26, 1995

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

FIG.

[Fig. 2]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 10]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 9]

FIG. 11

[Fig. 12]

[Fig. 13]

Claims (2)

[Claims] 1. A body having (a) a club face, a toe, a heel, and a rear surface, the body having an elongated opening extending between the toe and the heel, and (b) adjacent to the club face. And an elongated first weight extending between the toe and heel and received in the opening in the body, and (c) extending between the rear wall of the body and the club face. A golf club head comprising a plurality of second weights. 2. A body having (a) a club face, a toe, a heel and an opening, and (b) a weight extending between the toe and the heel adjacent to the club face, the weight being within the opening. A weight having a solid member that is received, the solid member having opposite ends on both sides; and (c) the solid member for extending the downtime of the impact between the golf ball and the club head. A golf club head comprising: caps provided at both ends.